Good question. We adopted a dog from our local ASPCA. She's an elderly toy poodle, very small. She has an extra-small safety vest through which a seat belt may be threaded. When we go somewhere for an overnight stay, we take along her things, such as a comforter she enjoys, her heated bed, her fleece blanket, booties to protect her paws from snow and ice and salt, her food (Iambs - the best there is), and her water and food bowls.

-- Craig